Mine has been down since yesterday lunchtime. No fault on line according to the service centre check online. However when I contacted TalkTalk via chat they state there is a fault in my area. Very unhelpful as website states 'Connection is okay'. They are unable to tell me when the engineer will visit and state the website will be updated. Doubtful as there is nothing on the website about the fault.
Sorry to hear you're having issues. I'm looking at your line now but can't seem to identify any external issues that could be causing your loss of service.
I am however unable to communicate with your router. Could you please confirm the make and model of the router you have connected and advise of the light status on the front?